JPS5818503A - Power generation equipment by storing hot water - Google Patents

Abstract

PURPOSE:To suppress the fall of the pressure and temperature in an accumulator during the consumption of hot water, by providing a steam generator in a power generation equipment by storing hot water, separating hot water into steam and warm water and supplying the steam to the accumulator. CONSTITUTION:In operation, warm water 9 in a warm water tank 8 is supplied to a steam drum 5 by a pump 11 and then conducted to a waste gas economizer 4 through a feed water heater 6 by a circulating pump 7 so that the water is made hot by high-temperature waste gas from an external separate equipment. When the temeprature of the hot water has reached a prescribed level, a control valve 18 is opened to supply the hot water to an accumulator 16. The hot water in the accumulator 16 is supplied to a hot water turbine 25 by opening a valve 34, so that the hot water is separated into steam and warm water of medium temperature. The steam is conducted to a steam turbine 27 to rotate a generator. The warm water of medium temperature is pressurized by a pump 33 so that the water is returned to the tank 8.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hot water storage power generation device that heats hot water using waste heat from equipment, stores it in hot water tubes, and supplies the waste to a power generation system to generate power.

The steam turbine power generation system, which generates electricity with the electric machine connected to it through the rotation of the steam turbine, has 4IK thermal energy ftI during low load times in preparation for peak load times and unforeseen power generation.
? It is possible to install a steam accumulator to keep the water cool. This kind of Akiemator is a hot water intake pipe hot water teacher device Kl! I! After connecting the steam outlet to the steam turbine (1), open the hot water intake to store hot water during low load times, and open the steam outlet to store hot water during peak load times. 11jl1 to supply O steam to the steam turbine
8f'.

Figure E1 is a diagram showing the relationship between the steam consumption of the accumulator and the temperature change inside the tank in this type of conventional steam turbine power generation system flK with an Akiemulator. The vertical axis shows the temperature inside the tank f°C. It is clear in the figure that 5K, as steam is consumed for power generation! For example, when the tank is full, the temperature and pressure inside the tank are 294℃ and the pressure is 80.5ψ-.
In the case of 40 fighting S! When the temperature is consumed, the temperature inside the tank decreases to lOO
℃Kfiru. In reality, the maximum working pressure M Ok
V/LUT is controlled at 11 degrees, and the minimum working pressure is 0.5 kv/m (80°C) for electrical work, 0 for factory use! ! 〜6ks/m(110℃〜lso℃＞hh
As is clear from the diagram of 20J4/- with a maximum of 212° C., the pressure decreases to the lowest working pressure with only about 20% consumption.

te)! In a K% steam turbine power generation system, even if a large capacity tantalum is used, only 2 o- of steam will be consumed and power generation will end, so the utilization rate of the vessel will be extremely poor. No, /n! Since large pressure changes are frequently repeated during the process, large pressure changes occur, which often leads to the disadvantage that the capacity of the tank is limited in order to avoid fatigue of the material. □ On the other hand, in recent years, FiζOII air turbine generator K
A steam/water separator is attached and a hot water pipe is supplied to it to separate 1r.
A total flow KO power generation system has been developed that uses TL skin steam to drive a steam turbine. Therefore, if hot water is stored in the Akiemulator and taken out when the beater is loaded, and then supplied to the electric νmetem to generate electricity, the zero pressure drop in the Akiemulator I as described above can be greatly reduced. @
However, in the case of t hot water consumption, there were 9 cracks formed in the tank! The evaporation of the water is carried out, and this results in //! As the internal temperature changes and the pressure drops, it is impossible to be satisfied and expect good results.

The present invention is based on the above-mentioned point K11, in which hot water from a hot water heating device connected to equipment outside the device is stored in the Akiemulator, and is supplied to the total power generation system as needed. And generate electricity! As well as
A steam generator is installed to separate the hot water from the hot water heating device into steam and hot water, and the steam is supplied to the aqueductor to calculate the hot water consumption Kf'P, which represents the pressure inside the akinemulator,
It should be configured so as to restrict the amount of am falling.
By making it possible to use most of the energy stored in the accumulator, the usefulness of the accumulator can be improved, and by eliminating the stress change W11 of the accumulator due to repeated pressure fluctuations, it is possible to increase the amount of energy stored in the accumulator, and to reduce the amount of energy stored in the accumulator. Hot water storage ml designed for high temperature and high pressure! Powerful scissors tI
! I have something to offer. Below is an example of the present invention tgwK*
I will explain it in detail.

This is a schematic configuration diagram of an embodiment of a steam turbine power generation device according to the Japanese company Honkaku@. In the figure, a hot water circulation path Ka consisting of piping 1.2.3, an exhaust gas economizer 4 as a hot water heating device, a steam drum 5 as a steam generator, and a feed water heater 6 are installed. In the piping 2, there is a circulation pump 7 that circulates hot water in the circulation path.
is provided. Reference numeral 8 denotes a hot water tank for storing 9 tons of hot water discharged from a power generation system 22, which will be described later.
A pipe 10 passing through the inner pipe B is connected to the pipe 1, and a water supply pump 11 is provided in this pipe. Previously! The exhaust gas economizer 4 is connected to the exhaust heat section of the equipment outside the power generation device, and high-temperature exhaust gas is guided there.The hot water is heated by this exhaust gas, and the hot water is heated to the hot water intake. 1
The steam is then guided to the steam drum 5. In addition, the air drum 5 has a function of separating hot water into hot water pipe steam and hot water, and the separated hot water is circulated and guided to the feed water heating SIS as described above, and the steam outlet 13 is , piping 14, and the Akiemulator 16KiI & [Reteiru, which will be described later. In addition, the feed water heater 6 has a function of preheating the hot water that passes through the pipe 1t and is supplied to the steam drum 5. Roughly, L1 passes through the feed water heater 6t and enters the round pipe 10.
A water supply control valve 1S is provided which detects the pressure within the steam drum s and fully opens and closes the hot water passage of the piping 10.

The middle humerator 16' is formed into a closed cylindrical shape and is connected to the steam drum 5 by the piping 14 as described above, and is connected to the exhaust gas economizer 4 by the piping 11. The connection is closed. Furthermore, a control valve 18 is provided in the piping 11 to detect the temperature of the hot water passing through ζIL and open/close the piping.
4, the value of steam passing through the t'L pipe Ii! However, there is a route that goes to the pedestal accumulator 11 and a route that feeds hot water and insects in the mixer 1s and goes to the achi accumulator 16.
A pair of valves 2, 2 that are selectively closed so that the
1 has been postponed! For A.

The power generation system 2! is the hot water outlet of accumulator 16 by piping ISK! Connect to 4! A hot water I-bin that separates hot water into steam and medium-temperature water! Connect this hot water turbine 2S and piping 26 with kudzu-fi:, steam turbine 2
1, this steam turbine 2T and m aft generator 2@
and steam turbines! A condenser that connects to the TO outlet and condenses the discharge steam! It consists of ■ and. A pipe 30 connecting the condenser 2 and the hot water tank 8 is connected to a discharge port of the hot water turbine 2s. 31 are connected to each other, and each pipe 30.31 has a pump 32.3.
3 are provided respectively. 34 is a valve that opens and closes the pipe 23t.

The operation of the hot water storage power generation device configured as above will be explained. When the hot water 9 is stored in the hot water tank 8 and the system is started, the hot water 9 is supplied to the piping 10 by the water supply pump 11.
The inside is fed to the steam drum 5, and the hot water is heated from the S company circulation pump TK to the piping 2, and the feed water is heated! Since exhaust gas from equipment outside the equipment is led to I6, piping 1, exhaust gas economizer 4, and f4, the circulating hot water is gradually heated up by the exhaust gas and becomes hot water. Therefore, ζO
The hot water 9 in the pipe 10 passing through the heating stage 6 and the feed water heating stage 6 is preheated by the circulating hot water and supplied to the steam drum 5. When the temperature of the hot water reaches a predetermined temperature, the control valve 18 detects ζrt and the piping 170 hot water passage opens, and hot water is supplied to the accumulator 1ε.
This hot water is supplied with steam taken out from the steam outlet 13 of the steam drum 5 and passed through the pipe 14 by the mixer 1s when the valve 20 is opened, and then sent to the Akiemator 16 as feed water set at a predetermined temperature. I can supply it. Konozu Hiro, Ben S
By opening 4, the water supplied to the 21 tPa low-heat water turbine is separated into steam and medium-temperature water, and this steam is supplied to the steam turbine 2T through the pipe 26, and The inside of the piping 31 is pressurized with a hot water pump 3s [
Head to Piping 3. Then, the steam turbine 2T is completely turned around by the supplied steam, and the electric machine is 1
The steam discharged from the S-air turbine ty is condensed in the condenser 3, pressurized by the pump 32, and heated as it is fed through the pipe 3e. turbine 25
It merges with the medium temperature water from the water and becomes hot water and is stored in the hot water tank 8.
1.1! deceive Note that the supply of hot water 9 to the steam drum 5 is controlled by a water supply control valve 15.

In the power generation device that operates in this way, as hot water is taken out from the Akiem generator 16, the temperature and pressure inside the Akiemator 16 tend to drop ≠i, but the valve 20
t- Close valve 21 is opened and steam is supplied from the steam drum 5 to the Akie emulator 16 in an amount corresponding to the amount of hot water taken out. and can hold pressure. In the case of H, the decrease in temperature and pressure that is about to occur in the accumulator 11 will occur depending on the order in which the space in the tank is filled up due to the consumption of hot water.
Since the amount of steam is 1 kVh compared to when steam is taken out from the Akiem generator 16, it is sufficient to replenish the entire amount of steam.

Figure 1113 is a diagram showing the relationship between the hot water consumption of the accumulator 16 and the temperature change in the tanker corresponding to Figure 1811, and the horizontal axis shows the ratio of the consumed hot water amount to the initial hot water amount. The vertical axis indicates the tank internal temperature of 1°C. However, this case shows a case in which steam is not replenished by the steam drum 5 in FIG. 2. As is clear from the figure, the temperature and pressure drop in the tank is small until about 50% of the hot water is consumed, and after that, the curve becomes gentler compared to the steam extraction type shown in enlarged figure 1. Ruka,
Note that a drop in temperature and pressure can be seen. Therefore, by replenishing steam using the steam drum 5, the drop in temperature and pressure can be completely regulated until the entire amount of hot water is consumed.

In fact, Figure 4 shows the relationship between the internal temperature of this Akiemulator 1@, the ratio of the specific volume of saturated hot water to saturated steam, and the ratio of saturated hot water to saturated steam, and the horizontal axis shows the adPj. - The temperature inside the mulator is taken as ct, and the vertical axis shows the saturated hot water to cell/air O specific volume ratio, engineering/I ruby ratio ta water [expressed in multiples as 1]. 'gc) The KllEIS diagram shows the relationship between the internal temperature of Akie Emulator 11 and the energy ratio of saturated hot water to saturated steam @
As shown in the diagram, the horizontal axis shows the accumulator internal temperature °C tube,
The hard axis shows the energy ratio of saturated hot water to saturated steam, and the steam is 1
It is spent in multiples. @For example 20 with h in figure 4
In an Akiem reactor at 0°C, when replenishing air at the same temperature and pressure, the specific volume of steam is 110 times the specific volume of hot water. Just to be sure, I took a bottle of hot water from Akiemureta 16 to 171□0. The pressure in the accumulator 16 can be kept constant by replenishing the weight and flow rate of the trachea. In this case, the enthalpy ratio between the two is 3.274, so as shown in [5ml], energy replenishment by steam can be done by hot water at 1274 1 Energy Replenishment □ Company □.

110 33.6 In this case, the power generation system! as generator 2
In addition to 8, a hot water turbine 25, a steam turbine 2T, and a condenser 29 are used.
It is also possible to create a power generation system that uses only 5, and a power generation system that includes a hot water tank for hot water and a steam turbine Y27.

As is clear from the above explanation, according to this book, in a hot water storage power generation system, hot water from the hot water heating device connected to the equipment row equipment is stored in the Akiemulator, and as needed, the total At the same time, a steam generator R is installed to separate hot water from hot water heating Wrm into steam and hot water, and the steam is supplied to an accumulator to generate hot water. By completely regulating the pressure and temperature drop inside the accumulator due to consumption, almost all of the thermal energy stored in the accumulator can be used, resulting in a high heat storage effect and a reduction in the temperature of the container. Since the utilization rate is improved and stress fluctuations in the Achiemulator container due to repeated pressure fluctuations are eliminated, the rtt can be made large in capacity and the heat energy extracted can be taken out at high temperatures and high pressures. In addition, since it is possible to generate hot water and steam in a nearly constant state at all times, the structure of the power generation system can be simplified and its efficiency can be improved. It is extremely efficient as it can produce several times to hundreds of times more ON air than make-up steam.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the relationship between steam consumption and temperature changes inside the tank in a conventional hot water storage power generation system.
I'm so happy 51i! Figure i3 shows an example of the hot water storage power generation device according to the present invention, Figure 2 is a schematic diagram of its configuration, and Figure 3 shows hot water consumption and internal temperature changes when no steam generator is used. Figure W44 shows the relationship between the internal temperature of the accumulator and the specific volume ratio of saturated hot water to saturated steam and the ental ratio. Figure 5 shows the relationship between the internal temperature of the accumulator and the ratio of saturated hot water to saturated steam. Relationship with energy ratio @
6 in the figure! 1゜4... Exhaust gas economizer, 5... Steam drum, 12... Hot water right population, 13... Steam composting port,
1 @... Akiem 11, 22... Power generation system, 24... Hot water job exit. Procedural amendment (Hakuwa 1. Indication of the case 1982 Patent Application No. 118303 2, Name of the invention Hot water storage power generation device 3, Person making the amendment Relationship to the case Patent Applicant name (name)
(590) Mitsui Engineering & Shipbuilding Co., Ltd. 6. Contents of the amendment (11% The scope of the claims is amended in a separate document. (2) Page 4 of the specification, lines 7 to 15, or the present invention... By configuring the system, the following is amended: ``The present invention has been made in view of the above points, and includes connecting an accumulator that stores thermal energy to a hot water heating device, and installing an accumulator in this accumulator. (9) A power generation system is connected to the hot water outlet to generate electricity, and (4) a steam generator is connected to the Achiemulator to compensate for the pressure drop due to hot water consumption of the Achiemulator. ,” (3) “Hot water heating device” in lines 5 and 6 of the 5th member is “
"Hot water heating device". (4) On page 12, lines 3 to 11, ``Connected to device-related equipment...by forming a fist'' is amended as follows. "The hot water from the hot water heating device is stored in the Akiemulator □, and the hot water taken out from the hot water outlet is used to generate electricity. At the same time, a steam generator is connected to the AdP3-Mulator. By configuring the system to compensate for the pressure drop due to hot water consumption, 1. a hot water heating device that heats water under pressure; an accumulator that is connected to the hot water heating device and stores the thermal energy; This accumulator is characterized by being provided with a power generation system connected to a hot water outlet provided therein, and a steam generator having a steam outlet connected to the accumulator and compensating for a pressure drop due to hot water consumption in the accumulator. Hot water storage power generation equipment.

Claims (1)

[Claims] A hot water heating device that uses waste heat from equipment outside the device to heat supplied water under pressure, and this hot water heating device! II&1 is an Akie emulator for storing its discharged heat energy, a power generation system connected to the hot water outlet of this Akie emulator, and a steam outlet connected to the accumulator to compensate for the pressure drop due to hot water consumption of the Akie emulator. Hot water storage power generation device with air leakage generator and 1A and 4I features.